|Quadrangle map, 1:250,000-scale||TK|
|Quadrangle map, 1:63,360-scale||A-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at an elevation of about 4,400 feet, approximately 1/2 mile north-northwest of peak 6319 and 0.8 mile northeast of lake 4101. The occurrence is in the SW1/4 sec. 27, T. 24 N., R. 1 E., Seward Meridian. The location is accurate to within 1/4 mile. This is locality 96 of Csejtey and Miller (1978) and Singer and others (1978).|
Geologic descriptionThis occurrence consists of float of Cretaceous or Paleocene tonalite that has vein quartz with pyrite and chalcopyrite, and is stained by malachite (Csejtey and others, 1978; Csejtey and Miller, 1978). A float sample contains 20 parts per million silver, 1 part per million gold, and greater than 20,000 parts per million copper (Miller and others, 1978).
|Geologic map unit||(-148.61932017764, 62.4999192169584)|
|Mineral deposit model||Porphyry copper-gold (Cox and Singer, 1986; model 20c)|
|Mineral deposit model number||20c|
|Age of mineralization||Quartz veins in Cretaceous or younger plutonic rocks.|
|Alteration of deposit||Oxidation of copper minerals.|
|Workings or exploration||Only limited surface sampling by U.S. Geological Survey (Miller and others, 1978).|
|Indication of production||None|
Cobb, E.H., and Csejtey, Bela, Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-716, 63 p.
Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 22 p., 1 sheet, scale 1:250,000.
Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L, 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains quadrangle, northern part of Anchorage quadrangle, and southwest part of Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-A, 60 p., 1 sheet, scale 1:250,000.
Miller, R.J., Cooley, E.F., O'Leary, R.M., Garmezy, Larry, Csejtey, Bela, Jr., Smith, T.E., and Cleveland, M.N., 1978, Analysis of geochemical samples from the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-1052, 279 p., 3 sheets, scale 1:250,000.
|Reporters||D. Bickerstaff (U.S. Geological Survey)|
|Last report date||10/1/2002|